Patents Assigned to Texaco Chemical Company
  • Reaction of hypochlorites with polyoxypropylene glycols
    Patent number: 5120879
    Abstract: Polyoxypropylene diketones are prepared by initially adding predetermined amounts of a mono- or dicarboxylic acid having a pK<4.5 and a water solubility at 25.degree. C. of >1%, a polyoxypropylene glycol and, optionally, water, to a reaction zone and thereafter adding an aqueous solution of an alkali metal or an alkaline earth metal hypochlorite oxidant to the reaction zone with agitation under reaction conditions including a temperature of about 10.degree. to about 50.degree. C., a pressure of about 0 to 1,000 psig. and a total reaction time of about 0.5 to 20 hours, whereby said polyoxypropylene glycol will be substantially selectively converted to the said corresponding diketone, and recovering said diketone.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis
  • Epoxy resin compositions
    Patent number: 5120817
    Abstract: An epoxy resin composition comprises an vicinal polyepoxide and a Mannich condensation reaction product curing agent. The curing agent is the Mannich condensation reaction product of a phenol, formaldehyde and a polyoxyethylenediamine of the formula:NH.sub.2 (CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 CH.sub.2 NH.sub.2,and wherein: x ranges from 1 to 3. These epoxy resin compositions are useful in coatings, adhesives, encapsulations and composite matrices.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Harold G. Waddill, Jiang-Jen Lin
  • Preparation of polyether amide from tetraethylene glycol diamine and terephthalic acid
    Patent number: 5118785
    Abstract: Polyether amides may be produced by reacting aromatic dicarboxylic acids with tetraethylene glycol diamine. This is surprising since aromatic dicarboxylic acids, such as terephthalic acid cannot be readily reacted with triethylene glycol diamine. Suitable dicarboxylic acids include terephthalic acid, isophthalic acid, t-butyl isophthalic acid, and mixtures thereof. Tetraethylene glycol diamine is also known as JEFFAMINE.RTM. EDR-192 Amine. The resulting polyether amides are useful to make polymers, including fibers, with unusually good water absorbancy properties.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: June 2, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Wei-Yang Su
  • Spray polyurea elastomers using chopped glass roving
    Patent number: 5118728
    Abstract: A spray polyurea elastomer is made in combination with a filler material by spraying together two reactive elastomers and dispensing filler material into the spray pattern.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: June 2, 1992
    Assignee: Texaco Chemical Company
    Inventor: Dudley J. Primeaux
  • Anti-icing compositions containing thickener blend having polyacrylic acid and copolymer of acrylic acid and hydrophobic vinyl monomer
    Patent number: 5118435
    Abstract: Anti-icing compositions, such as used on aircraft wing surfaces, may be thickened using a blend of a polyacrylic acid and a copolymer of polyacrylic acid with a vinyl monomer, where the copolymer acts as a thickener modifier. The two polymers form a thickener blend. The polyacrylic acid may have a weight average molecular weight of from about 2,500,000 to about 3,500,000 and be slightly crosslinked with a diene monomer. The composition also contain an alkylene glycol component, such as propylene glycol, diethylene glycol and mixtures thereof. These compositions retain a high viscosity,even when diluted with water, and exhibit a highly pseudo plastic rheology indicating desirable flow off characteristics. A neutralizing agent to neutralize at least partially the carboxylic acid groups of the thickening blend is also preferably included.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: June 2, 1992
    Assignee: Texaco Chemical Company
    Inventor: Edward C. Nieh
  • Propylene oxide purification by extractive distillation
    Patent number: 5116466
    Abstract: An extractive distillation agent consisting essentially of 1-methyl-2-pyrrolidone is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide contaminated with reduced quantities of acetone and methanol, and a heavier bottoms distillation fraction containing substantially all of the 1-methyl-2-pyrrolidone, water and acetone and some of the methanol introduced into the distillation column.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 26, 1992
    Assignee: Texaco Chemical Company
    Inventors: Edward T. Marquis, George P. Speranza, Yu-Hwa E. Sheu, William K. Culbreth, III, David G. Pottratz
  • Water and acetone removal from propylene oxide by extractive distillation
    Patent number: 5116467
    Abstract: An extractive distillation agent consisting essentially of sulfolane is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide, and a heavier bottoms distillation fraction containing substantially all of the sulfolane and water introduced into the distillation column.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 26, 1992
    Assignee: Texaco Chemical Company
    Inventors: Edward T. Marquis, George P. Speranza, Yu-Hwa E. Sheu, William K. Culbreth, III, David G. Pottratz
  • Removal of water, methanol and acetone from propylene oxide by extractive distillation
    Patent number: 5116465
    Abstract: An extractive distillation agent consisting essentially of 2-hydroxyethyl 2-hydroxyethylcarbamate, and is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide, and a heavier bottoms distillation fraction containing substantially all of the 2-hydroxyethyl 2-hydroxyethycarbamate, and water introduced into the disillation column.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 26, 1992
    Assignee: Texaco Chemical Company
    Inventors: Ernest L. Yeakey, Edward T. Marquis
  • Polyoxyalkyleneamines containing tetraalkylpiperidine functionality and their use as light, heat and oxidation stabilizers
    Patent number: 5112979
    Abstract: A compound of the formula: ##STR1## where each of the R groups are the same and include a C.sub.1 to C.sub.4 alkyl and R' is either ##STR2## where x is a number from 2 to 10 is disclosed. The use of the prescribed component as a light, heat and oxidation stabilizer in polyurea, polyurethane and polyurethane-urea elastomers, as well as epoxy systems, is also disclosed.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: May 12, 1992
    Assignee: Texaco Chemical Company
    Inventors: Jiang-Jen Lin, Michael Cuscurida, Harold G. Waddill
  • Heterogeneous catalyst for alkoxylation of alcohols
    Patent number: 5110991
    Abstract: Disclosed is a novel method for alkoxylation alcohols by reacting the alcohols with epoxides over a heterogeneous catalyst comprising a fluoride of an element of Group I of the Periodic Table on an oxide of Group IIA or Group IIIA of the Periodic Table.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: May 5, 1992
    Assignee: Texaco Chemical Company
    Inventors: Donald H. Champion, George P. Speranza
  • Surfactants containing a polyurethane or polyurea polymer
    Patent number: 5109061
    Abstract: Surfactant compositions comprising a water-soluble polyurethane or polyurea dispersed in a surfactant are described. These compositions are prepared by reacting an aromatic or aliphatic polyisocyanate with a polyol or polyamine in the presence of a surfactant. Solid products of this invention are suitable for preparing molded or shaped articles such as bathtub toys.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: April 28, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Jiang-Jen Lin
  • Tert-butylamine synthesis over montmorillonite clays
    Patent number: 5107027
    Abstract: Disclosed is a method for preparation of alkylamines which comprises reacting ammonia and a monounsaturated olefin in the presence of a catalyst selected from the group consisting of:a. Acid modified montmorillonite clays;b. Heterogenous catalyst comprising a fluorine-containing compound on an inert support; andc. Heteropoly acids on an inert support.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: April 21, 1992
    Assignee: Texaco Chemical Company
    Inventors: John F. Knifton, Neal J. Grice
  • Method for the purification of propylene oxide
    Patent number: 5106458
    Abstract: Methyl formate is removed from impure propylene oxide by contacting the impure propylene oxide in a treating zone with a basic ion exchange resin for a period of time sufficient to convert the methyl formate to formic acid and methanol, and by withdrawing a substantially methyl formate-free treated propylene oxide product from the treating zone.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: April 21, 1992
    Assignee: Texaco Chemical Company
    Inventors: Robert A. Meyer, Eileen T. Nguyen, William A. Smith
  • Reaction injection molded elastomers prepared from amine terminated polyethers, amine terminated chain extender, a polycarbonate diol containing quasiprepolymer
    Patent number: 5106935
    Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a quasi-prepolymer made from an excess of polyisocyanate reacted with polycarbonate polyols and polyether polyols.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: April 21, 1992
    Assignee: Texaco Chemical Company
    Inventors: Robert A. Grigsby, Jr., Wheeler C. Crawford, Michael Cuscurdia
  • Process for co-oligomerizing propylene and alpha-olefins to prepare synthetic lubricant base stocks having improved properties
    Patent number: 5105037
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks having improved properties. Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts. When a mixture of propylene and long-chain alpha-olefin is used, in which up to about 20 wt. % of the mixture comprises propylene, and the co-oligomers prepared therefrom are hydrogenated, a synthetic lubricant base stock having a lower pour point and a higher viscosity index is prepared.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: April 14, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis
  • Amidoamines derived from amines with aminopropyl and secondary amine termini
    Patent number: 5103056
    Abstract: Disclosed is a method for selective formation of amidoamines which comprises reacting a carboxylic acid group, such as, for example, a diacid or an aliphatic acid terminated amide with an aminopropylated disecondary amine which contains a secondary amine terminus in the same molecule at a temperature of about 150.degree. C. to about 260.degree.0 C.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: April 7, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Donald H. Champion
  • Molybdenum recovery
    Patent number: 5101052
    Abstract: An epoxidation reaction product formed by the molybdenum catalyzed reaction of propylene with tertiary butyl hydroperoxide to provide propylene oxide and tertiary butyl alcohol is separated by distillation into a propylene fraction, a propylene oxide fraction, a tertiary butyl alcohol fraction and a heavy liquid distillation fraction composed primarily of tertiary butyl hydroperoxide, tertiary butyl alcohol, dissolved molybdenum catalyst, and impurities including lower aliphatic C.sub.1 -C.sub.4 carboxylic acids, and the heavy liquid distillation fraction is saturated with ammonia to precipitate the molybdenum therefrom for recovery.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: March 31, 1992
    Assignee: Texaco Chemical Company
    Inventors: Robert A. Meyer, Edward T. Marquis
  • Paired Mannich condensates of alkyl phenols
    Patent number: 5101060
    Abstract: Normally liquid final Mannich condensates prepared by reacting a para C.sub.1 -C.sub.15 alkyl phenol with formaldehyde and a first polyoxyalkylene diamine to form an intermediate Mannich condensate that is reacted with formaldehyde and a second polyoxyalkylene diamine to form a final Mannich condensate, the first and second polyoxyalkylene diamines having the formula: ##STR1## wherein R represents hydrogen or methyl and R' represents an alkyl group containing 1 to 4 carbon atoms or cyanoethyl group, and n represents positive numbers having a value of 1 to about 6, the final Mannich condensate having the formula: ##STR2## wherein X and Y are polyoxyalkylene amine groups derived from the first and second polyoxyalkylene diamines and formaldehyde.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: March 31, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Jiang-Jen Lin
  • Catalytic process for the production of diketone derivatives of polyoxypropylene glycols
    Patent number: 5099073
    Abstract: A process for the conversion of a polyoxypropylene glycol to the corresponding diketone derivative by dehydrogenation in the presence of an unsupported nickel, copper, chromia catalyst or a Raney nickel catalyst.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: March 24, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, John M. Larkin
  • Bis-hydroxy diamides and methods therefor
    Patent number: H1043
    Abstract: Novel bis-hydroxy diamides having the formula: ##STR1## where R is an alkyl or aryl moiety having from 3 to 10 carbon atoms and where x ranges from 1 to 6 may be produced by reacting dicarboxylic acids with polyethylene glycol monoamines. Suitable dicarboxylic acids include adipic acid, terephthalic acid, isophthalic acid, t-butyl isophthalic acid, 1,1,3-trimethyl-5-carboxy-3-(p-carboxyphenyl)indane, and mixtures thereof. Suitable monoamines include diethylene glycol monoamine, also known as Diglycolamine.RTM. amine (DGA); triethylene glycol monoamine (TEGMA) and tetraethylene glycol monoamine (T.sub.4 EGMA), among others. The resulting bis-hydroxy diamides are useful to make hydroxy-terminated polyamides and as fuel additive corrosion inhibitors. The diamides have unusual solubility properties.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: April 7, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Jiang-Jen Lin